[#bsl-list-054-merge-09]
= xref:bsl.adoc[bsl]::xref:bsl/list-054.adoc[list]::merge
:relfileprefix: ../../
:mrdocs:

Merge sorted `other` into this list using the specified `comparator`.

== Synopsis

Declared in `<bslstl_list.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class COMPARE>
void
merge(
    xref:bsl/list-054.adoc[list]& other,
    COMPARE comparator);
----

== Description

This method has no effect if `other` is this list; otherwise, `other` is left empty. The behavior is undefined unless both `other` and this list are sorted in non‐decreasing order according to the ordering provided by `comparator`, and unless both `other` and this list use the same allocator.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *other*
| sorted list to merge into this list
| *comparator*
| binary predicate used to order elements
|===


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